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Add an example ISR implementation into the RL78 GCC demo.

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Richard Barry 2013-03-17 15:38:23 +00:00
parent c79a5fe50c
commit 7fb22e27da
5 changed files with 167 additions and 5 deletions
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121
FreeRTOS/Demo/RL78_E2Studio_GCC/src/ExampleISR.S Normal file
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@ -0,0 +1,121 @@
/*
FreeRTOS V7.4.0 - Copyright (C) 2013 Real Time Engineers Ltd.
FEATURES AND PORTS ARE ADDED TO FREERTOS ALL THE TIME. PLEASE VISIT
http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.
***************************************************************************
* *
* FreeRTOS tutorial books are available in pdf and paperback. *
* Complete, revised, and edited pdf reference manuals are also *
* available. *
* *
* Purchasing FreeRTOS documentation will not only help you, by *
* ensuring you get running as quickly as possible and with an *
* in-depth knowledge of how to use FreeRTOS, it will also help *
* the FreeRTOS project to continue with its mission of providing *
* professional grade, cross platform, de facto standard solutions *
* for microcontrollers - completely free of charge! *
* *
* >>> See http://www.FreeRTOS.org/Documentation for details. <<< *
* *
* Thank you for using FreeRTOS, and thank you for your support! *
* *
***************************************************************************
This file is part of the FreeRTOS distribution.
FreeRTOS is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License (version 2) as published by the
Free Software Foundation AND MODIFIED BY the FreeRTOS exception.
>>>>>>NOTE<<<<<< The modification to the GPL is included to allow you to
distribute a combined work that includes FreeRTOS without being obliged to
provide the source code for proprietary components outside of the FreeRTOS
kernel.
FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
details. You should have received a copy of the GNU General Public License
and the FreeRTOS license exception along with FreeRTOS; if not itcan be
viewed here: http://www.freertos.org/a00114.html and also obtained by
writing to Real Time Engineers Ltd., contact details for whom are available
on the FreeRTOS WEB site.
1 tab == 4 spaces!
***************************************************************************
* *
* Having a problem? Start by reading the FAQ "My application does *
* not run, what could be wrong?" *
* *
* http://www.FreeRTOS.org/FAQHelp.html *
* *
***************************************************************************
http://www.FreeRTOS.org - Documentation, books, training, latest versions,
license and Real Time Engineers Ltd. contact details.
http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
including FreeRTOS+Trace - an indispensable productivity tool, and our new
fully thread aware and reentrant UDP/IP stack.
http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High
Integrity Systems, who sell the code with commercial support,
indemnification and middleware, under the OpenRTOS brand.
http://www.SafeRTOS.com - High Integrity Systems also provide a safety
engineered and independently SIL3 certified version for use in safety and
mission critical applications that require provable dependability.
*/
/*
* This file defines the RegTest tasks as described at the top of main.c
*/
/* ISR_Support.h contains the definitions of portSAVE_CONTEXT() and
portRESTORE_CONTEXT(). */
#include "ISR_Support.h"
.global _vANExampleISR_ASM_Wrapper
.extern _vAnExampleISR_C_Handler
.text
/*
* This demo does not include a functional interrupt service routine - so
* this dummy handler (which is not actually installed) is provided as an
* example of how an ISR that needs to cause a context switch needs to be
* implemented. ISRs that do not cause a context switch have no special
* requirements and can be written as per the compiler documentation.
*
* This assembly wrapper function calls the main handler, which is called
* vAnExampleISR_C_Handler(), and is implemented in main.c. See the
* documentation page for this demo on the FreeRTOS.org website for full
* instructions.
*
* NOTE: vANExampleISR_ASM_Wrapper needs to be installed into the relevant
* vector within vector_table.c.
*/
vANExampleISR_ASM_Wrapper:
/* portSAVE_CONTEXT() must be the first thing called in the ASM
wrapper. */
portSAVE_CONTEXT
/* Once the context has been saved the C handler can be called. */
call !!_vAnExampleISR_C_Handler
/* Finally the ISR must end with a call to portRESTORE_CONTEXT()
followed by a reti instruction to return from the interrupt to whichever
task is now the task selected to run (which may be different to the task
that was running before the interrupt started). */
portRESTORE_CONTEXT
reti
.end

3
FreeRTOS/Demo/RL78_E2Studio_GCC/src/FreeRTOS_Source/portable/GCC/RL78/portasm.S
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@ -75,9 +75,6 @@
#include "FreeRTOSConfig.h"
#include "ISR_Support.h"
#define CS 0xFFFFC
#define ES 0xFFFFD
.global _vPortYield
.global _vPortStartFirstTask
.global _vPortTickISR

42
FreeRTOS/Demo/RL78_E2Studio_GCC/src/main.c
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@ -83,6 +83,12 @@
* This file implements the code that is not demo specific, including the
* hardware setup and FreeRTOS hook functions.
*
* This project does not provide an example of how to write an RTOS compatible
* interrupt service routine (other than the tick interrupt itself), so this
* file contains the function vAnExampleISR_C_Handler() as a dummy example (that
* is not actually installed) that can be used as a reference. Also see the
* file ExampleISR.S, and the documentation page for this demo on the
* FreeRTOS.org website for full instructions.
*
* ENSURE TO READ THE DOCUMENTATION PAGE FOR THIS PORT AND DEMO APPLICATION ON
* THE http://www.FreeRTOS.org WEB SITE FOR FULL INFORMATION ON USING THIS DEMO
@ -93,6 +99,7 @@
/* Scheduler include files. */
#include "FreeRTOS.h"
#include "task.h"
#include "semphr.h"
/* Set mainCREATE_SIMPLE_BLINKY_DEMO_ONLY to one to run the simple blinky demo,
or 0 to run the more comprehensive test and demo application. */
@ -114,6 +121,9 @@ void vApplicationIdleHook( void );
void vApplicationStackOverflowHook( xTaskHandle pxTask, signed char *pcTaskName );
void vApplicationTickHook( void );
/* This variable is not actually used, but provided to allow an example of how
to write an ISR to be included in this file. */
static xSemaphoreHandle xSemaphore = NULL;
/*-----------------------------------------------------------*/
int main( void )
@ -136,6 +146,38 @@ int main( void )
}
/*-----------------------------------------------------------*/
void vAnExampleISR_C_Handler( void )
{
/*
* This demo does not include a functional interrupt service routine - so
* this dummy handler (which is not actually installed) is provided as an
* example of how an ISR that needs to cause a context switch needs to be
* implemented. ISRs that do not cause a context switch have no special
* requirements and can be written as per the compiler documentation.
*
* This C function is called from a wrapper function that is implemented
* in assembly code. See vANExampleISR_ASM_Wrapper() in ExampleISR.S. Also
* see the documentation page for this demo on the FreeRTOS.org website for
* full instructions.
*/
short sHigherPriorityTaskWoken = pdFALSE;
/* Handler code goes here...*/
/* For purposes of demonstration, assume at some point the hander calls
xSemaphoreGiveFromISR().*/
xSemaphoreGiveFromISR( xSemaphore, &sHigherPriorityTaskWoken );
/* If giving the semaphore unblocked a task, and the unblocked task has a
priority higher than or equal to the currently running task, then
sHigherPriorityTaskWoken will have been set to pdTRUE internally within the
xSemaphoreGiveFromISR() function. Passing a pdTRUE value to
portYIELD_FROM_ISR() will cause this interrupt to return directly to the
higher priority unblocked task. */
portYIELD_FROM_ISR( sHigherPriorityTaskWoken );
}
/*-----------------------------------------------------------*/
void vApplicationMallocFailedHook( void )
{
/* Called if a call to pvPortMalloc() fails because there is insufficient

3
FreeRTOS/Demo/RL78_E2Studio_GCC/src/main_blinky.c
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@ -81,7 +81,8 @@
*
* NOTE 2: This file only contains the source code that is specific to the
* basic demo. Generic functions, such FreeRTOS hook functions, and functions
* required to configure the hardware, are defined in main.c.
* required to configure the hardware, along with an example interrupt service
* routine, are defined in main.c.
******************************************************************************
*
* main_blinky() creates one queue, and two tasks. It then starts the

3
FreeRTOS/Demo/RL78_E2Studio_GCC/src/main_full.c
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@ -81,7 +81,8 @@
*
* NOTE 2: This file only contains the source code that is specific to the
* full demo. Generic functions, such FreeRTOS hook functions, and functions
* required to configure the hardware, are defined in main.c.
* required to configure the hardware, along with an example of how to write an
* interrupt service routine, are defined in main.c.
******************************************************************************
*
* main_full() creates all the demo application tasks and two software timers,